Windows 10: Product ID number only 20 alphanumeric characters - valid program

Can Microsoft determine if my computer is running a valid Windows 10 program if I only have a product ID number of 20 alphanumeric characters not a 25 alphanumeric Key number?

:)

 

Microsoft product key versus microsoft produt id

No

Product key is a 25 alphanumeric character code that look like this:

xxxxx-xxxxx-xxxxx-xxxxx-xxxxx

This key is used to activate your microsoft product

The product id is use to identify your product like a serial number

 

Current active users that are friends

The other reason I suggested this is that users can add characters to their username that are not alphanumeric (e.g. user*). This confuses things somewhat when looking at the list.

 

Having 20 character product key, but Windows setup asking 25 character product key

My friend upgraded his Windows 8.1 machine to Windows 10. The upgrade was successful. It got activated too. Now somehow his machine got screwed and we are doing reinstall from clean Windows 10 bootable USB. I have noted down the product key that was shown
after upgrade in Windows 10. I have noted down Product ID show in window that appear when I do Win+X > System. But that product id is of 20 characters separated into 4 groups, each containing 5 characters. However when I booted Windows 10 setup from USB,
it was asking 25 character long product key. How can I get this product key?

Or will it be auto activated once I install Windows 10 by skipping entering product key in the setup?